Shock absorber for sucker rods



W. Fx. BARNEY v SHOCK ABSORBER FOR SUCKER RODS March 25 1924.

Filed oct. 22.

Patented Mer. 25, 1924i.

unirse WILLIAIM R. BRNEY, 0F TULSA, OKLAHOMA., ASSEGNOR TO VJ'LBUR C.NCEE/IS, OF TULSA, OKLA-lli.

SHOCK ABSOB-BER FOR SUCKER RODS.

Application led October 22, 1921. Serial No. 509,568.

To @ZZ whom t may concern:

Be it known that l, lViLLiAM R. BARNEY, a citizen of the United States,residing at Tulsa, in the county of Tulsa and State of Gklahoma, haveinvented new and useful improvements in Shook Absorbers for Sucker Rods,of which the following is a speeiiioation. Y

ln pumping deep wells especially with pumping jacks it is desirable torelieve the parts trom the shook due to slack or other causes arisingfrom the pull lines. The present invent-ion is designed to Cushion theconnection between the jack and the sucker rods so as to relieve theparts of shook.

rEhe invention is illustrated in the aecompanying drawings as ollowszFig. 1 shows a perspective view of a jack and pump connection.

Fig. 2 a section on the line 2 2 in Fig. 1.

1 marks the easing head, 2 the tubing extending from the easing head and3 the sucker rod.

The jack is mounted on the base 4L. lt is provided with a rooker 5operating on the bearing 6 on the base. rlhe pull rod 7 operates on onearm of the rocker and the push rod 8 extends from the other arm ot therocker to the pump beam 9, the beam being pivotally mounted at 10 on theframe 11 extending upwardly from the base.

A trunnion bearing 12 is mounted on the beain 9 and a trunnion 13operates on this bearing. The trunnion has the hollow extensions 111-1"lirough which the polished rod of the sucker rod extends. A spring 15is arranged around the polished rod and supported by the' trunnion. Theupper end o the spring engages a clamping block 17. The block has anopening 18 through which the polished rod extends. A clamping plate 2Oextends through a lateral slot 21 in the clamping block. It has anopening 22 through which the polished rod extends. The plate is providedwith a screw-threaded shank 23 on which is arranged a nut 24C forexerting pressure on the plat-e to clamp the rod in the opening in theclamping blook.

A sleeve 25 is arranged within the spring 15 and extends upwardly asuiiioient distance to limit the compression movement of the springwhere the load is greater than can be handled by the spring and also toassure a eert-ain amount of movement oit' the sucker rod. The lower endof the sleeve is provided with a base 16 which is centered on theextension 14. A spring 15 rests on this base.

l/Vhat 1 claim as new is zln a pumping apparatus, the combination ont anoscillating beam; a trunnion on the beam having vertical hollowextensions adapted to receive a sucker rod of an oil pump; a springsupported by the trunnion; an enlargement on the sucker rod resting onthe spring; and a sleeve within the spring limiting the movement of thesucker rod relatively to the trunnion, said sleeve having a. base onwhich the spring rests, said base centering on the upwardly extendingextensions on the trunnion.

ln testimony whereof l have hereunto set my hand.

WILLIAM R. BARNEY.

